| RADIUS | 545 km |
| MASS | 1.27e+21 kg |
| DENSITY | 1.52 (gm/cm) |
| GRAVITY | ? |
| ORBIT PERIOD | 4.15 (Earth days) |
| ROTATION PERIOD | 4.15 (Earth days) |
| DISTANCE FROM PLANET | 265,980 km |
| ECCENTRICITY OF ORBIT | 0.0050 |
- The surface of Umbriel is heavily cratered and is Uranus' darkest satellite.
- Umbriel is named after a character in Alexander Pope's poem The Rape of the Lock.
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